TIPS:
You need to have Acrobat Reader version 5 or newer installed to view the files with icon.

If the files with or icon will not display see the Site FAQ for help on printing, viewing and using this information.

  488 Owner's Manual (Courtesy of Evan Haydon)

  489 Owner's Manual (Mobile Power Supply for the 488)

  490 Owner's Manual (Base Power Supply for the 488)

Diagrams
     488 Schematic
     489 Mobile Power Supply Schematic
     490 Base Power Supply Schematic

Model 488 Accessories Information sheet
Hygain Model 488 Amplifier Information Literature